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試卷名稱：107年 - 107 國立成功大學_碩士班招生考試_電信管理研究所：經濟學#122747
年份：107年
科目：研究所、轉學考(插大)-經濟學
15. The firm shown in the figure above is _______.
(A) not a natural monopoly because its MC curve is below its ATC curve.
(B) not a natural monopoly because its MC curve is horizontal.
(C) not a natural monopoly because its ATC curve slopes downward where it intersects the demand curve.
(D) a natural monopoly because its ATC curve slopes downward where it intersects the demand curve.
